// open spout
Config conf = new Config();
TopologyContext context = null;
TestSpoutOutputCollector collector = new TestSpoutOutputCollector();
spout.open(conf, context, collector);
// add some files
FileUtils.writeByteArrayToFile(new File(tempDir, "x-1"), payload("x-1"), true);
FileUtils.writeByteArrayToFile(new File(tempDir, "x-2"), payload("x-2"), true);